mathews



F. MATHEWS.

CAR DOOR FASTENER.

APPLICATION FILED `MM! 3. 19u.

Patented N ov. 18, 1919.

fnl/6717571 7&6 5565 I F. MATHEWS..

GAR DOOR FASTENER.

L1cAT|0N FILED MAY 3. 1917.

1,322,49. 1111611161 NOV. 18, 11119.

2 SHEETS-S`HEET 2.

IERED MATI-IEWS, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,T0 WALTER P. MURPHY, 0F NEW YORK, N, Y.

CARDOOR FASTENER.

Specification of Letters Patent.

Patented Nov. 18, 1919.

Application lec'lvMay 3, 1917. Serial No. 166,083.

To all whom t may concern Be it known that I, FRED MATHEws, a citizen ofthe United States, residing at Chicago, in the county of Cook and Stateof Illinois, have invented new and useful Improvements in Car-DoorFasteners, of which the following is a full, clear, and exactdescription.

My invention relates to sliding door fasteners, and particularly tofasteners for the rear edge of slidingcar doors when closed.

The object of my invention is not only to fasten the sliding door whenclosed, but also to move the door tightly againstthe doorpost, by meanswhich withdraw from the recess in the door-post into the door whenunlocked and does not interfere with the movement of the door when it isdesired to open the same, substantially as hereinafter fully described,and as particularly pointed out in the claims.

In the drawings:

Figure 1 is a front view of my invention showing it applied to afragment of a sliding car door and side of a car.

Fig. 2 is a horizontal section of the same taken on dotted line 2 2,Fig. 1.

Fig. 3 is a vertical transverse section taken on dotted line 3 3, Fig.1.

Fig. t is an edge view of the door showing said lock fixtures in sideelevation.

F ig. 5 is a vertical transverse section taken on dotted line 5-5, Fig.3.

Fig. 6 is a front view of a fragment of the plate invwhich the bolt holeis made and a transverse section of the inner reduced end of said bolttherein, said figure being on the line 6 6 of Fig. 3.

Fig. 7 is a perspective view of the bolt segregated from the remainderof the fastener.

Referring to the drawings, A represents a fragment of the side wall of acar body; B the rear post of the door-frame thereof and C the brokenaway portion of a sliding car door to which my improvements are applied.At a suitable point inthe outer surface of the door post av recess a ismade, and the mouth of this recess is closed by a flat plate b which hasa hole c therein through which the bolt is adapted to be shot orwithdrawn, as will hereinafter be more fully explained.

This bolt 7 has a cylindrical body which is rotatively seated in thebore of a tubular casing 8, which latter projects transversely throughthe door structure from a metal plate 9 that is secured by rivets orbolts to the outer surface of the door next -its rear edge. The body ofthe bolt extends from end to end of the bore of the casing 8 and itsouter end is reduced and extends beyond plate 9 and has the boss 10 of ahandle 12 securely mounted thereon. j

When the bolt is shot into recess a so as to lock the door the handlethereof will extend to the left in a horizontal position, and when saidbolt is rotated into such position as to be withdrawn from recess a andunlock the door, the handle will be in a horizontal position and extendto the right. When the han- -dle is at the limit of its left hand motionit will rest upon a bracket 13 projecting outward from plate 9, andwhich has an opening 14 therein that alines with an opening 15 in theshaft of said handle. If desired, the yoke of a seal 16 may be passedthrough these openings 141 and 15 and its ends properly fastened in theusual manner when the door is locked. When the door is unlocked, handle12 will rest upon a bracket 17 projecting from plate 9 on the side ofcasing S opposite bracket 13. f

The cylindrical body of the bolt has a pin 18 projecting laterallytherefrom near its inner end, and thisA pin is adapted to enter andengage a spiral groove 19 made in the inner circumference of the bore ofcasing 8, which latter extends from a point near the inner end of saidbore to the outer end thereof. The inner end of the groove terminates ina transverse segmental portion 19a.

When the bolt is at the limit of its outward movement pin 18 will engagethe outer end portion of the spiral groove 19 and when it is rotated tothe left the engagement of the pin with the groove forces the boltinward until the pin arrives at the inner end of the spiral portion ofthe groove, whereupon the longitudinal movement of the bolt ceases andit moves on its axis to the extent permitted by the transverse segmentalportion 19a of the groove. When the bolt arrives at the limit of itsinward movement the inner reduced end of the bolt will have passedthrough bolt-hole c in plate b and the head 21 projecting transverselyfrom its inner end will be within the confines of recess a. When thebolt has arrived at this last mentioned position, pin 18 will enter thetransverse segmental portion of the groove, and as said bolt is rotatedto the extent of said segmental portion, head 21 will engage the innerinclined surface of a segmental rib 22 situated on the inside of plateb, the curvature of which is struck from the pivotal center of saidhead, and thus draws the door tightly against the door-post ors'ubstantially'so. Then the bolt is turned from lefty to right, at thestart of its movement, the'b'olt'rotates on its axis until head 21thereofis in position to be withdrawn from bolt-hole o whereupon theengagement of `pin 18 with the'spiral part of the groove moves'the boltoutward and withdraws the head out of recess a.

N'hat I claim as new is:

1. The combination witha sliding door, the door-post of a door-frame,and a plate covering over a recess in the outer surface' of said postthat has a bolt opening therein,

of a tubular bearing carried by said door andv a bolt journale'd in saidbearing, one ofsaid last named two elements having a spiral groove whichterminates in a Ytransverse seg-- mental portion and the other having apin projecting therefrom that venters and-en-V gages the groove, saidbolt Ibeing provided with a laterally projecting head on its innerextremity, and means for rotating said bolt and causing the head thereofto move into or out of said recess, said pin being positioned to enterthe transverse segmental p0rtion of the groove when the head enters therecess.

2. The combination with a door j amb, and a door to bedrawn againstthesame,orI a plate spanning fa recess formed in the jamb, said platebeing apertured for passage of a bolt, a'cam formed on the plate on itsside `toward said recess, a bolt bearing mounted in thedoor-in registerwith the plate aperture, a locking bolt mounted in the bearing, one 'ofsaid last -mentioned two elements formed with a spiral grooveterminating at the inner end in an arcuate groove concentric with theaxis ofthe bear-ing,"a guiding pin xed inthe other of said elements andtraveling in said groove, and a Vcam lug formed on the inner end oftheboltand movable into engagement with said cam by inward travel of thepin in the 'spiral Vportion of the groove, the arcuate portion of vthegroove being of sufficient length to accommodate the Vmovement of Ythepin incident to travel of said lug upon the cam, and said pin being sopositioned as to leave the spiral portion of 'the groove and enter thearcuate portion thereof to-permitthe lug to be moved against the cam.'

In witness whereof 'I h-ave'hereunto set my Witnesses:

PETER F. MCSHANE, FRANK D. THoMAsoN.

